S Sikhar Chaudhary • 5.88K Points Tutor III Q. Which pandas method is used to create dummy/indicator variables? (A) get_dummies() (B) dummy_vars() (C) to_categorical() (D) one_hot()
S Sikhar Chaudhary • 5.88K Points Tutor III Q. Which method is used to drop a level from a MultiIndex in pandas? (A) unstack() (B) stack() (C) droplevel() (D) remove_level()
S Sikhar Chaudhary • 5.88K Points Tutor III Q. Which method is used to join two DataFrames based on their index? (A) merge() (B) join() (C) concat() (D) append()
S Sikhar Chaudhary • 5.88K Points Tutor III Q. Which pandas function reads a JSON file into a DataFrame? (A) read_csv() (B) read_json() (C) read_excel() (D) read_html()
S Sikhar Chaudhary • 5.88K Points Tutor III Q. Which method returns the number of non-null elements in each column or row? (A) count() (B) size() (C) len() (D) nunique()
S Sikhar Chaudhary • 5.88K Points Tutor III Q. Which pandas method reshapes a DataFrame by pivoting the index and columns? (A) pivot() (B) pivot_table() (C) melt() (D) stack()
S Sikhar Chaudhary • 5.88K Points Tutor III Q. Which method returns a boolean DataFrame indicating where values are null? (A) isnull() (B) notnull() (C) isna() (D) Both A and C
S Sikhar Chaudhary • 5.88K Points Tutor III Q. Which method allows conditional selection of rows in a DataFrame? (A) loc[] (B) iloc[] (C) ix[] (D) select_rows()
S Sikhar Chaudhary • 5.88K Points Tutor III Q. Which pandas method converts a Series with categorical values to category dtype? (A) astype('category') (B) to_category() (C) categorical() (D) convert_category()
S Sikhar Chaudhary • 5.88K Points Tutor III Q. Which method is used to rename columns in a pandas DataFrame? (A) rename_columns() (B) rename() (C) set_columns() (D) update_columns()
